 .ant-layout-sider-collapsed .anticon {
  font-size: 16px;
  margin-left: 8px;
}
.ant-layout-sider-collapsed .nav-text {
  display: none;
}

 .ant-layout-sider-collapsed .ant-menu-submenu-vertical > .ant-menu-submenu-title:after {
  display: none;
}